EP3898086A1 - Ensemble de transfert de particules abrasives mises en forme - Google Patents

Ensemble de transfert de particules abrasives mises en forme

Info

Publication number
EP3898086A1
EP3898086A1 EP19835777.4A EP19835777A EP3898086A1 EP 3898086 A1 EP3898086 A1 EP 3898086A1 EP 19835777 A EP19835777 A EP 19835777A EP 3898086 A1 EP3898086 A1 EP 3898086A1
Authority
EP
European Patent Office
Prior art keywords
shaped abrasive
abrasive particle
transfer assembly
abrasive particles
particle transfer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19835777.4A
Other languages
German (de)
English (en)
Inventor
Joseph B. Eckel
Aaron K. NIENABER
Thomas J. Nelson
Amelia W. KOENIG
Ann M. Hawkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of EP3898086A1 publication Critical patent/EP3898086A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • B24D3/004—Flexible supporting members, e.g. paper, woven, plastic materials with special coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds

Definitions

  • Abrasive particles and abrasive articles including the abrasive particles are useful for abrading, finishing, or grinding a wide variety of materials and surfaces in the manufacturing of goods. As such, there continues to be a need for improving the cost, performance, and ease of manufacturing abrasive articles.
  • the shaped abrasive particle transfer assembly includes a substrate including an adhesive and a plurality of shaped abrasive particles adhered to the substrate and forming a predetermined pattern thereon.
  • Various embodiments of the present disclosure further relate to a method of making a shaped abrasive particle transfer assembly.
  • the shaped abrasive particle transfer assembly includes a substrate including an adhesive and a plurality of shaped abrasive particles adhered to the substrate and forming a predetermined pattern thereon.
  • the method includes contacting the substrate with the plurality of shaped abrasive particles to adhere the plurality of shaped abrasive particles to the substrate.
  • Various embodiments of the present disclosure further relate to a coated abrasive article.
  • the coated abrasive article includes a backing defining a major surface.
  • the coated abrasive article further includes a shaped abrasive particle transfer assembly.
  • the shaped abrasive particle transfer assembly includes a substrate including an adhesive and a plurality of shaped abrasive particles adhered to the substrate and forming a predetermined pattern thereon.
  • the shaped abrasive particle transfer assembly is attached to the backing by a make coat.
  • Various embodiments of the present disclosure further relate to a method of making a coated abrasive article.
  • the coated abrasive article includes a backing defining a major surface.
  • the coated abrasive article further includes a shaped abrasive particle transfer assembly.
  • the shaped abrasive particle transfer assembly includes a substrate including an adhesive and a plurality of shaped abrasive particles adhered to the substrate and forming a predetermined pattern thereon.
  • the shaped abrasive particle transfer assembly is attached to the backing by a make coat.
  • the method includes adhering the shaped abrasive particle transfer assembly to the backing.
  • the method further includes drying the make coat.
  • Various embodiments of the present disclosure further relate to a method of using a coated abrasive article.
  • the coated abrasive article includes a backing defining a major surface.
  • the coated abrasive article further includes a shaped abrasive particle transfer assembly.
  • the shaped abrasive particle transfer assembly includes a substrate including an adhesive and a plurality of shaped abrasive particles adhered to the substrate and forming a predetermined pattern thereon.
  • the shaped abrasive particle transfer assembly is attached to the backing by a make coat.
  • the method includes moving at least one of the coated abrasive article and a workpiece relative to one another while in contact with one another to remove at least a portion of the workpiece.
  • the shaped abrasive particle transfer assembly can help to ensure that a coated abrasive article to which shaped abrasive particle transfer assembly is incorporated, can reliably replicate a desired predetermined pattern.
  • the shaped abrasive particle transfer assembly can help to fill a void or disruption in a pattern in that the assembly can be placed in the void or disruption directly.
  • FIG. 1A is a perspective view of a shaped abrasive particle transfer assembly, in accordance with various embodiments.
  • FIG. IB is a perspective view of the shaped abrasive particle transfer assembly in which shaped abrasive particles are rotated 90 degrees about a z-axis relative to those shown in FIG. 1A, in accordance with various embodiments.
  • FIGs. 2A and 2B show truncated pyramidal shaped abrasive particles, in accordance with various embodiments.
  • FIGs. 3A-3E show various embodiments of tetrahedral shaped abrasive particles, in accordance with various embodiments.
  • FIG. 4 is a schematic figure showing an abrasive article maker, in accordance with various embodiments.
  • FIG. 5 is a perspective view of a production tool of the abrasive article maker, in accordance with various embodiments.
  • FIG. 6 is a sectional view of a coated abrasive article, in accordance with various embodiments.
  • a range of “about 0.1% to about 5%” or“about 0.1% to 5%” should be interpreted to include not just about 0.1% to about 5%, but also the individual values (e.g., 1%, 2%, 3%, and 4%) and the sub-ranges (e.g., 0.1% to 0.5%, 1.1% to 2.2%, 3.3% to 4.4%) within the indicated range.
  • the statement“about X to Y” has the same meaning as“about X to about Y,” unless indicated otherwise.
  • the statement“about X, Y, or about Z” has the same meaning as“about X, about Y, or about Z,” unless indicated otherwise.
  • the acts can be carried out in any order without departing from the principles of the disclosure, except when a temporal or operational sequence is explicitly recited. Furthermore, specified acts can be carried out concurrently unless explicit claim language recites that they be carried out separately. For example, a claimed act of doing X and a claimed act of doing Y can be conducted simultaneously within a single operation, and the resulting process will fall within the literal scope of the claimed process.
  • substantially refers to a majority of, or mostly, as in at least about 50%, 60%, 70%, 80%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.9%, 99.99%, or at least about 99.999% or more, or 100%.
  • shaped abrasive particle means an abrasive particle having a
  • One process to make a shaped abrasive particle such as a shaped ceramic abrasive particle includes shaping the precursor ceramic abrasive particle in a mold having a predetermined shape to make ceramic shaped abrasive particles.
  • Ceramic shaped abrasive particles, formed in a mold, are one species in the genus of shaped ceramic abrasive particles.
  • shaped ceramic abrasive particles can be cut from a sheet into individual particles. Examples of suitable cutting methods include mechanical cutting, laser cutting, or water-jet cutting.
  • suitable cutting methods include mechanical cutting, laser cutting, or water-jet cutting.
  • shaped ceramic abrasive particles include shaped abrasive particles, such as triangular plates, or elongated ceramic rods/filaments.
  • Shaped ceramic abrasive particles are generally homogenous or substantially uniform and maintain their sintered shape without the use of a binder such as an organic or inorganic binder that bonds smaller abrasive particles into an agglomerated structure and excludes abrasive particles obtained by a crushing or comminution process that produces abrasive particles of random size and shape.
  • a binder such as an organic or inorganic binder that bonds smaller abrasive particles into an agglomerated structure and excludes abrasive particles obtained by a crushing or comminution process that produces abrasive particles of random size and shape.
  • the shaped ceramic abrasive particles comprise a homogeneous structure of sintered alpha alumina or consist essentially of sintered alpha alumina.
  • FIG. 1A is a perspective view of shaped abrasive particle transfer assembly 100.
  • FIG. IB is a perspective view of shaped abrasive particle transfer assembly 100 in which shaped abrasive particles 102 are rotated 90 degrees about a z-axis relative to those shown in FIG. 1 A.
  • Shaped abrasive particle transfer assembly includes a plurality of shaped abrasive particles 102 adhered to substrate 104.
  • the predetermined pattern of shaped abrasive particles 102 can conform to any desired predetermined pattern.
  • shaped abrasive particles 102 can be arranged as a plurality of parallel lines, in a circle, in staggered rows, or the like. As shown in FIGs. 1A and IB, shaped abrasive particles 102 are arranged in a plurality of rows on substrate 104.
  • Substrate 104 can be relatively thin.
  • substrate 104 can have a thickness in a range of from about 25.4 pm to about 2550 pm, about 76.2 pm to about 762 pm, less than, equal to, or greater than about 25.4 pm, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550, 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950, 2000, 2050, 2100, 2150, 2200, 2250,
  • substrate 104 is substantially planar and has a constant thickness.
  • substrate 104 can be curved or have a substantially non-planar profde.
  • the thickness is a measure of the larges thickness value of substrate 104.
  • Adhesive 106 can be any suitable class of adhesive.
  • adhesive 106 can be a pressure- sensitive adhesive, a resinous adhesive, a tackifier, or a mixture thereof.
  • suitable pressure-sensitive adhesives include an acrylic pressure-sensitive adhesive, a rubber pressure- sensitive adhesive, a silicone pressure-sensitive adhesive, a styrene block copolymer pressure- sensitive adhesive, a polyvinyl ether-based adhesive, or a mixture thereof.
  • rubber pressure-sensitive adhesives include a pressure-sensitive adhesive including a natural rubber, a synthetic rubber, or a mixture thereof.
  • a suitable acrylic pressure -sensitive adhesive includes a poly (methacrylate).
  • suitable resinous adhesives include those having one or more resins chosen from a phenolic resin, an epoxy resin, a urea-formaldehyde resin, an aminoplast resin, a melamine resin, an acrylated epoxy resin, a urethane resin, and mixtures thereof.
  • substrate 104 can be an adhesive film such that opposed first and second major surfaces of substrate 104 include adhesive 106.
  • substrate 104 is an adhesive film
  • shaped abrasive particles 102 can be adhered to a first major surface and a second major surface can have a release liner attached thereto.
  • the release liner can include a polyethylene, a polypropylene, a polyurethane, or a mixture thereof.
  • substrate 104 includes a plurality of perforations 109 extending at least through adhesive 106.
  • At least a portion of individual shaped abrasive particles 102 are embedded in adhesive 106.
  • Individual shaped abrasive particles 102 can be embedded in adhesive 106 to a suitable degree that assembly 100 can be moved or transported without a substantial number of shaped abrasive particles 102 being dislodged from adhesive 106.
  • reinforcing component 108 can be included. As shown in FIGs. 1A and IB, reinforcing component has adhesive 106 disposed thereon and adhesive 106 has shaped abrasive particles 102 at least partially embedded therein. Reinforcing component 108 is a substantially porous material, which can allow a material to flow through the body of component 108. Reinforcing component can include any suitable material such as a perforated polymeric film, a perforated metal foil, a woven fabric, a knitted fabric, perforated paper, a vulcanized fiber, a nonwoven, a foam, a perforated screen, a perforated laminate, a fibrous web, or a combination thereof.
  • the fibrous web can include a plurality of fibers forming a non-woven web and having the adhesive disposed on the individual fibers, a spun-bound non-woven web, a needle-entangled non woven web, a braided web, a knit web, a woven web, a blown microfiber, or a combination thereof.
  • the fibrous web can include a yam comprising a plurality of the fibers.
  • shaped abrasive particles 102 are generally triangular shaped abrasive particles. Individual shaped abrasive particles 102 are shown in more detail in FIGs. 2A and 2B. As shown in FIGs. 2A and 2B shaped abrasive particle 102 includes a truncated regular triangular pyramid bounded by a triangular base 202, a triangular top 204, and plurality of sloping sides 206A, 206B, 206C connecting triangular base 202 (shown as equilateral although scalene, obtuse, isosceles, and right triangles are possible) and triangular top 204.
  • Slope angle 208 is the dihedral angle formed by the intersection of side 206A with triangular base 202. In the case of shaped abrasive particle 102, all of the slope angles have equal value.
  • side edges 210A, 210B, and 210C have an average radius of curvature in a range of from about 0.5 pm to about 80 pm, about 10 pm to about 60 pm, or less than, equal to, or greater than about 0.5 pm, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, or about 80 pm.
  • sides 206A, 206B, and 206C have equal dimensions and form dihedral angles with the triangular base 202 of about 82 degrees
  • dihedral angle between the base and each of the sides may independently range from 45 to 90 degrees (for example, from 70 to 90 degrees, or from 75 to 85 degrees).
  • Edges connecting sides 206, base 202, and top 204 can have any suitable length.
  • a length of the edges may be in a range of from about 0.5 pm to about 2000 pm, about 150 pm to about 200 pm, or less than, equal to, or greater than about 0.5 pm, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550, 1600, 1650, 1700,
  • FIGs. 1A and IB show triangular shaped abrasive particles 102 there are many other suitable examples a shaped abrasive particles that may be included in assembly 100.
  • assembly 100 can include tetrahedral shaped abrasive particles.
  • FIGs. 3A-3E show various embodiments of tetrahedral shaped abrasive particles 310. As shown in FIGs. 3A-3E, shaped abrasive particles 310 are shaped as regular tetrahedrons. As shown in FIG.
  • shaped abrasive particle 310A has four faces (320A, 322A, 324A, and 326A) joined by six edges (330A, 332A, 334A, 336A, 338A, and 339A) terminating at four vertices (340A, 342A, 344A, and 346A). Each of the faces contacts the other three of the faces at the edges. While a regular tetrahedron (e.g., having six equal edges and four faces) is depicted in FIG. 3A, it will be recognized that other shapes are also permissible. For example, tetrahedral abrasive particles 310 can be shaped as irregular tetrahedrons (e.g., having edges of differing lengths).
  • shaped abrasive particle 310B has four faces (320B, 322B, 324B, and 326B) joined by six edges (330B, 332B, 334B, 336B, 338B, and 339B) terminating at four vertices (340B, 342B, 344B, and 346B).
  • Each of the faces is concave and contacts the other three of the faces at respective common edges.
  • a particle with tetrahedral symmetry e.g., four rotational axes of threefold symmetry and six reflective planes of symmetry
  • shaped abrasive particles 310B can have one, two, or three concave faces with the remainder being planar.
  • shaped abrasive particle 3 IOC has four faces (320C, 322C, 324C, and 326C) joined by six edges (330C, 332C, 334C, 336C, 338C, and 339C) terminating at four vertices (340C, 342C, 344C, and 346C).
  • Each of the faces is convex and contacts the other three of the faces at respective common edges. While a particle with tetrahedral symmetry is depicted in FIG. 3C, it will be recognized that other shapes are also permissible.
  • shaped abrasive particles 3 IOC can have one, two, or three convex faces with the remainder being planar or concave.
  • shaped abrasive particle 310D has four faces (320D, 322D, 324D, and 326D) joined by six edges (330D, 332D, 334D, 336D, 338D, and 339D) terminating at four vertices (340D, 342D, 344D, and 346D). While a particle with tetrahedral symmetry is depicted in FIG. 3D, it will be recognized that other shapes are also permissible. For example, shaped abrasive particles 310D can have one, two, or three convex faces with the remainder being planar.
  • Deviations from the depictions in FIGs. 3A-3D can be present.
  • An example of such a shaped abrasive particle 310 is depicted in FIG. 3E, showing shaped abrasive particle 310E, which has four faces (320E, 322E, 324E, and 326E) joined by six edges (330E, 332E, 334E, 336E, 338E, and 339E) terminating at four vertices (340E, 342E, 344E, and 346E). Each of the faces contacts the other three of the faces at respective common edges. Each of the faces, edges, and vertices has an irregular shape.
  • the edges can have the same length or different lengths.
  • the length of any of the edges can be any suitable length.
  • the length of the edges can be in a range of from about 0.5 pm to about 2000 pm, about 150 pm to about 200 pm, or less than, equal to, or greater than about 0.5 pm, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550, 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950, or about 2000 pm.
  • Shaped abrasive particles 310A-310E can be the same size or different sizes.
  • Any of shaped abrasive particles 102 or 310 can include any number of shape features.
  • the shape features can help to improve the cutting performance of any of shaped abrasive particles 102 or 310.
  • suitable shape features include an opening, a concave surface, a convex surface, a groove, a ridge, a fractured surface, a low roundness factor, or a perimeter comprising one or more comer points having a sharp tip.
  • Individual shaped abrasive particles can include any one or more of these features.
  • Shaped abrasive particles 102 or 310 or any crushed abrasive particles further described herein can include any suitable material or mixture of materials.
  • shaped abrasive particles 102 or 310 can include a material chosen from an alpha-alumina, a fused aluminum oxide, a heat-treated aluminum oxide, a ceramic aluminum oxide, a sintered aluminum oxide, a silicon carbide, a titanium diboride, a boron carbide, a tungsten carbide, a titanium carbide, a diamond, a cubic boron nitride, a garnet, a fused alumina-zirconia, a sol-gel derived abrasive particle, a cerium oxide, a zirconium oxide, a titanium oxide, and combinations thereof.
  • shaped abrasive particles 102 or 310 and crushed abrasive particles can include the same materials.
  • shaped abrasive particles 102 or 310 and crushed abrasive particles can include the
  • At least one magnetic material may be included within or coated to shaped abrasive particle 102 or 310.
  • magnetic materials include iron; cobalt; nickel; various alloys of nickel and iron marketed as Permalloy in various grades; various alloys of iron, nickel and cobalt marketed as Femico, Kovar, FerNiCo I, or FerNiCo II; various alloys of iron, aluminum, nickel, cobalt, and sometimes also copper and/or titanium marketed as Alnico in various grades; alloys of iron, silicon, and aluminum (about 85:9:6 by weight) marketed as Sendust alloy; Heusler alloys (e.g., CuaMnSn); manganese bismuthide (also known as Bismanol); rare earth magnetizable materials such as gadolinium, dysprosium, holmium, europium oxide, alloys of neodymium, iron and boron (e.g., Nd2Fei4B), and alloys
  • the magnetizable material is an alloy containing 8 to 12 weight percent aluminum, 15 to 26 wt% nickel, 5 to 24 wt% cobalt, up to 6 wt% copper, up to 1 % titanium, wherein the balance of material to add up to 100 wt% is iron.
  • a magnetizable coating can be deposited on an abrasive particle 102 using a vapor deposition technique such as, for example, physical vapor deposition (PVD) including magnetron sputtering.
  • PVD physical vapor deposition
  • Including these magnetizable materials can allow shaped abrasive particle 102 or 310 to be responsive a magnetic field. Any of shaped abrasive particles 102 or 310 can include the same material or include different materials.
  • some shaped abrasive particles 102 or 310 can include a polymeric material and can be characterized as soft abrasive particles.
  • the soft shaped abrasive particles described herein can independently include any suitable material or combination of materials.
  • the soft shaped abrasive particles can include a reaction product of a polymerizable mixture including one or more polymerizable resins.
  • the one or more polymerizable resins such as a hydrocarbyl polymerizable resin. Examples of such resins include those chosen from a phenolic resin, a urea formaldehyde resin, a urethane resin, a melamine resin, an epoxy resin, a
  • the polymerizable mixture can include additional components such as a plasticizer, an acid catalyst, a cross-linker, a surfactant, a mild-abrasive, a pigment, a catalyst and an antibacterial agent.
  • the polymerizable resin or resins may be in a range of from about 35 wt% to about 99.9 wt% of the polymerizable mixture, about 40 wt% to about 95 wt%, or less than, equal to, or greater than about 35 wt%, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, or about 99.
  • the cross-linker may be in a range of from about 2 wt% to about 60 wt% of the polymerizable mixture, from about 5 wt% to about 10 wt%, or less than, equal to, or greater than about 2 wt%, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or about 15 wt%.
  • suitable cross linkers include a cross-linker available under the trade designation CYMEL 303 LF, of Allnex USA Inc., Alpharetta, Georgia, USA; or a cross-linker available under the trade designation CYMEL 385, of Allnex USA Inc., Alpharetta, Georgia, USA.
  • the mild-abrasive may be in a range of from about 5 wt% to about 65 wt% of the polymerizable mixture, about 10 wt% to about 20 wt%, or less than, equal to, or greater than about 5 wt%, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
  • suitable mild-abrasive s include a mild-abrasive available under the trade designation MINSTRON 353 TALC, of Imerys Talc America, Inc., Three Forks, Montana, USA; a mild-abrasive available under the trade designation USG TERRA ALBA NO.l CALCIUM SULFATE, of USG Corporation, Chicago, Illinois, USA; Recycled Glass (40-70 Grit) available from ESCA Industries, Ltd., Hatfield, Pennsylvania, USA, silica, calcite, nepheline, syenite, calcium carbonate, or mixtures thereof.
  • MINSTRON 353 TALC of Imerys Talc America, Inc., Three Forks, Montana, USA
  • USG TERRA ALBA NO.l CALCIUM SULFATE of USG Corporation, Chicago, Illinois, USA
  • Recycled Glass (40-70 Grit) available from ESCA Industries, Ltd., Hatfield, Pennsylvania, USA, silica, calcite, n
  • the plasticizer may be in a range of from about 5 wt% to about 40 wt% of the polymerizable mixture, about 10 wt% to about 15 wt%, or less than, equal to, or greater than about 5 wt%, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
  • suitable plasticizers include acrylic resins or styrene butadiene resins.
  • acrylic resins include an acrylic resin available under the trade designation RHOPLEX GL-618, of DOW Chemical Company, Midland, Michigan, USA; an acrylic resin available under the trade designation HYCAR 2679, of the Lubrizol Corporation, Wickliffe, Ohio, USA; an acrylic resin available under the trade designation HYCAR 26796, of the Lubrizol Corporation, Wickliffe, Ohio, USA; a polyether polyol available under the trade designation ARCOL LG-650, of DOW Chemical Company, Midland, Michigan, USA; or an acrylic resin available under the trade designation HY CAR 26315 , of the Lubrizol Corporation, Wickliffe, Ohio, USA.
  • An example of a styrene butadiene resin includes a resin available under the trade designation ROVENE 5900, of Mallard Creek Polymers, Inc., Charlotte, North Carolina
  • the acid catalyst may be in a range of from 1 wt% to about 20 wt% of the polymerizable mixture, about 5 wt% to about 10 wt%, or less than, equal to, or greater than about 1 wt%, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or about 20 wt%.
  • suitable acid catalysts include a solution of aluminum chloride or a solution of ammonium chloride.
  • the surfactant can be in a range of from about 0.001 wt% to about 15 wt% of the polymerizable mixture about 5 wt% to about 10 wt%, less than, equal to, or greater than about 0.001 wt%, 0.01, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or about 15 wt%.
  • surfactants examples include a surfactant available under the trade designation GEMTEX SC-85-P, of Innospec Performance Chemicals, Salisbury, North Carolina, USA; a surfactant available under the trade designation DYNOL 604, of Air Products and Chemicals, Inc., Allentown, Pennsylvania, USA; a surfactant available under the trade designation ACRYSOL RM-8W, of DOW Chemical Company, Midland, Michigan, USA; or a surfactant available under the trade designation
  • the antimicrobial agent may be in a range of from 0.5 wt% to about 20 wt% of the polymerizable mixture, about 10 wt% to about 15 wt%, or less than, equal to, or greater than about 0.5 wt%, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or about 20 wt%.
  • An example of a suitable antimicrobial agent includes zinc pyrithione.
  • the pigment may be in a range of from about 0.1 wt% to about 10 wt% of the polymerizable mixture, about 3 wt% to about 5 wt%, less than, equal to, or greater than about 0.1 wt%, 0.2, 0.4, 0.6, 0.8, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, or about 10 wt%.
  • suitable pigments include a pigment dispersion available under the trade designation SUNSPERSE BLUE 15, of Sun Chemical Corporation, Parsippany, New Jersey, USA; a pigment dispersion available under the trade designation SUNSPERSE VIOLET 23, of Sun Chemical Corporation, Parsippany, New Jersey, USA; a pigment dispersion available under the trade designation SUN BLACK, of Sun Chemical Corporation, Parsippany, New Jersey, USA; or a pigment dispersion available under the trade designation BLUE PIGMENT B2G, of Clariant Ltd., Charlotte, North Carolina, USA.
  • the mixture of components can be polymerized by curing.
  • Shaped abrasive particle 102 or 310 can be formed in many suitable manners for example, the shaped abrasive particle 102 or 310 can be made according to a multi -operation process. The process can be carried out using any material or precursor dispersion material.
  • the process can include the operations of making either a seeded or non-seeded precursor dispersion that can be converted into a corresponding (e.g., a boehmite sol-gel that can be converted to alpha alumina); fdling one or more mold cavities having the desired outer shape of shaped abrasive particle 102 or 310 with a precursor dispersion; drying the precursor dispersion to form precursor shaped abrasive particle; removing the precursor shaped abrasive particle 102 from the mold cavities; calcining the precursor shaped abrasive particle 102 or 310 to form calcined, precursor shaped abrasive particle 102 or 310; and then sintering the calcined, precursor shaped abrasive particle 102 or 310 to form shaped abrasive particle 102 or 310.
  • a seeded or non-seeded precursor dispersion that can be converted into a corresponding (e.g., a boehmit
  • the mold cavities may be filled with a melamine to form melamine shaped abrasive particles.
  • the process can include the operation of providing either a seeded or non-seeded dispersion of a precursor that can be converted into ceramic.
  • the precursor can be seeded with an oxide of an iron (e.g., FeO).
  • the precursor dispersion can include a liquid that is a volatile component.
  • the volatile component is water.
  • the dispersion can include a sufficient amount of liquid for the viscosity of the dispersion to be sufficiently low to allow filling mold cavities and replicating the mold surfaces, but not so much liquid as to cause subsequent removal of the liquid from the mold cavity to be prohibitively expensive.
  • the precursor dispersion includes from 2 percent to 90 percent by weight of the particles that can be converted into ceramic, such as particles of aluminum oxide monohydrate (boehmite), and at least 10 percent by weight, or from 50 percent to 70 percent, or 50 percent to 60 percent, by weight, of the volatile component such as water.
  • the precursor dispersion in some embodiments contains from 30 percent to 50 percent, or 40 percent to 50 percent solids by weight.
  • Suitable precursor dispersions include zirconium oxide sols, vanadium oxide sols, cerium oxide sols, aluminum oxide sols, and combinations thereof.
  • Suitable aluminum oxide dispersions include, for example, boehmite dispersions and other aluminum oxide hydrates dispersions. Boehmite can be prepared by known techniques or can be obtained commercially. Examples of commercially available boehmite include products having the trade designations “DISPERAL” and“DISPAL”, both available from Sasol North America, Inc., or“HIQ-40” available from BASF Corporation. These aluminum oxide monohydrates are relatively pure; that is, they include relatively little, if any, hydrate phases other than monohydrates, and have a high surface area.
  • the physical properties of the resulting shaped abrasive particle 102 or 310 can generally depend upon the type of material used in the precursor dispersion.
  • a“gel” is a three-dimensional network of solids dispersed in a liquid.
  • the precursor dispersion can contain a modifying additive or precursor of a modifying additive.
  • the modifying additive can function to enhance some desirable property of the abrasive particles or increase the effectiveness of the subsequent sintering step.
  • Modifying additives or precursors of modifying additives can be in the form of soluble salts, such as water-soluble salts.
  • They can include a metal-containing compound and can be a precursor of an oxide of magnesium, zinc, iron, silicon, cobalt, nickel, zirconium, hafnium, chromium, yttrium, praseodymium, samarium, ytterbium, neodymium, lanthanum, gadolinium, cerium, dysprosium, erbium, titanium, and mixtures thereof.
  • concentrations of these additives that can be present in the precursor dispersion can be varied.
  • the introduction of a modifying additive or precursor of a modifying additive can cause the precursor dispersion to gel.
  • the precursor dispersion can also be induced to gel by application of heat over a period of time to reduce the liquid content in the dispersion through evaporation.
  • the precursor dispersion can also contain a nucleating agent.
  • Nucleating agents suitable for this disclosure can include fine particles of alpha alumina, alpha ferric oxide or its precursor, titanium oxides and titanates, chrome oxides, or any other material that will nucleate the transformation.
  • the amount of nucleating agent, if used, should be sufficient to effect the transformation of alpha alumina.
  • a peptizing agent can be added to the precursor dispersion to produce a more stable hydrosol or colloidal precursor dispersion.
  • Suitable peptizing agents are monoprotic acids or acid compounds such as acetic acid, hydrochloric acid, formic acid, and nitric acid. Multiprotic acids can also be used, but they can rapidly gel the precursor dispersion, making it difficult to handle or to introduce additional components.
  • Some commercial sources of boehmite contain an acid titer (such as absorbed formic or nitric acid) that will assist in forming a stable precursor dispersion.
  • the precursor dispersion can be formed by any suitable means; for example, in the case of a sol-gel alumina precursor, it can be formed by simply mixing aluminum oxide monohydrate with water containing a peptizing agent or by forming an aluminum oxide monohydrate slurry to which the peptizing agent is added.
  • Defoamers or other suitable chemicals can be added to reduce the tendency to form bubbles or entrain air while mixing. Additional chemicals such as wetting agents, alcohols, or coupling agents can be added if desired.
  • a further operation can include providing a mold having at least one mold cavity, or a plurality of cavities formed in at least one major surface of the mold.
  • the mold is formed as a production tool, which can be, for example, a belt, a sheet, a continuous web, a coating roll such as a rotogravure roll, a sleeve mounted on a coating roll, or a die.
  • the production tool can include polymeric material.
  • suitable polymeric materials include thermoplastics such as polyesters, polycarbonates, poly(ether sulfone), poly(methyl methacrylate), polyurethanes, polyvinylchloride, polyolefin, polystyrene, polypropylene, polyethylene or combinations thereof, or thermosetting materials.
  • the entire tool is made from a polymeric or thermoplastic material.
  • the surfaces of the tool in contact with the precursor dispersion while the precursor dispersion is drying, such as the surfaces of the plurality of cavities include polymeric or thermoplastic materials, and other portions of the tool can be made from other materials.
  • a suitable polymeric coating can be applied to a metal tool to change its surface tension properties, by way of example.
  • a polymeric or thermoplastic production tool can be replicated off a metal master tool.
  • the master tool can have the inverse pattern of that desired for the production tool.
  • the master tool can be made in the same manner as the production tool.
  • the master tool is made out of metal (e.g., nickel) and is diamond-turned.
  • the master tool is at least partially formed using stereolithography.
  • the polymeric sheet material can be heated along with the master tool such that the polymeric material is embossed with the master tool pattern by pressing the two together.
  • a polymeric or thermoplastic material can also be extruded or cast onto the master tool and then pressed.
  • the thermoplastic material is cooled to solidify and produce the production tool. If a thermoplastic production tool is utilized, then care should be taken not to generate excessive heat that can distort the thermoplastic production tool, limiting its life.
  • Access to cavities can be from an opening in the top surface or bottom surface of the mold.
  • the cavities can extend for the entire thickness of the mold.
  • the cavities can extend only for a portion of the thickness of the mold.
  • the top surface is substantially parallel to the bottom surface of the mold with the cavities having a substantially uniform depth.
  • At least one side of the mold, the side in which the cavities are formed, can remain exposed to the surrounding atmosphere during the step in which the volatile component is removed.
  • the cavities have a specified three-dimensional shape to make shaped abrasive particle 102.
  • the depth dimension is equal to the perpendicular distance from the top surface to the lowermost point on the bottom surface.
  • the depth of a given cavity can be uniform or can vary along its length and/or width.
  • the cavities of a given mold can be of the same shape or of different shapes.
  • a further operation involves filling the cavities in the mold with the precursor dispersion (e.g., by a conventional technique).
  • a knife roll coater or vacuum slot die coater can be used.
  • a mold release agent can be used to aid in removing the particles from the mold if desired. Examples of mold release agents include oils such as peanut oil or mineral oil, fish oil, silicones, polytetrafluoroethylene, zinc stearate, and graphite.
  • a mold release agent such as peanut oil, in a liquid, such as water or alcohol, is applied to the surfaces of the production tool in contact with the precursor dispersion such that from about 0.1 mg/in 2 (0.6 mg/cm 2 ) to about 3.0 mg/in 2 (20 mg/cm 2 ), or from about 0.1 mg/in 2 (0.6 mg/cm 2 ) to about 5.0 mg/in 2 (30 mg/cm 2 ), of the mold release agent is present per unit area of the mold when a mold release is desired.
  • the top surface of the mold is coated with the precursor dispersion. The precursor dispersion can be pumped onto the top surface.
  • a scraper or leveler bar can be used to force the precursor dispersion fully into the cavity of the mold.
  • the remaining portion of the precursor dispersion that does not enter the cavity can be removed from the top surface of the mold and recycled.
  • a small portion of the precursor dispersion can remain on the top surface, and in other examples the top surface is substantially free of the dispersion.
  • the pressure applied by the scraper or leveler bar can be less than 100 psi (0.6 MPa), or less than 50 psi (0.3 MPa), or even less than 10 psi (60 kPa). In some examples, no exposed surface of the precursor dispersion extends substantially beyond the top surface.
  • a further operation involves removing the volatile component to dry the dispersion.
  • the volatile component can be removed by fast evaporation rates. In some examples, removal of the volatile component by evaporation occurs at temperatures above the boiling point of the volatile component.
  • An upper limit to the drying temperature often depends on the material the mold is made from. For polypropylene tool, the temperature should be less than the melting point of the plastic. In one example, for a water dispersion of from about 40 to 50 percent solids and a polypropylene mold, the drying temperatures can be from about 90° C to about 165° C, or from about 105° C to about 150° C, or from about 105° C to about 120° C. Higher temperatures can lead to improved production speeds but can also lead to degradation of the polypropylene tool, limiting its useful life as a mold.
  • the precursor dispersion shrinks, often causing retraction from the cavity walls.
  • the resulting shaped abrasive particle 102 can tend to have at least three concave major sides. It is presently discovered that by making the cavity walls concave (whereby the cavity volume is increased) it is possible to obtain shaped abrasive particle 102 that have at least three substantially planar major sides.
  • the degree of concavity generally depends on the solids content of the precursor dispersion.
  • a further operation involves removing resultant precursor shaped abrasive particle 102 from the mold cavities.
  • the precursor shaped abrasive particle 102 or 310 can be removed from the cavities by using the following processes alone or in combination on the mold: gravity, vibration, ultrasonic vibration, vacuum, or pressurized air to remove the particles from the mold cavities.
  • the precursor shaped abrasive particle 102 or 310 can be further dried outside of the mold. If the precursor dispersion is dried to the desired level in the mold, this additional drying step is not necessary. However, in some instances it can be economical to employ this additional drying step to minimize the time that the precursor dispersion resides in the mold.
  • the precursor shaped abrasive particle 102 or 310 will be dried from 10 to 480 minutes, or from 120 to 400 minutes, at a temperature from 50° C to 160° C, or 120° C to 150° C.
  • a further operation involves calcining the precursor shaped abrasive particle 102 or 310.
  • calcining essentially all the volatile material is removed, and the various components that were present in the precursor dispersion are transformed into metal oxides.
  • the precursor shaped abrasive particle 102 or 310 is generally heated to a temperature from 400° C to 800° C and maintained within this temperature range until the free water and over 90 percent by weight of any bound volatile material are removed.
  • a water-soluble salt can be introduced by impregnation into the pores of the calcined, precursor shaped abrasive particle 102. Then the precursor shaped abrasive particle 102 are pre-fired again.
  • a further operation can involve sintering the calcined, precursor shaped abrasive particle 102 or 310 to form particles 102 or 310.
  • the precursor includes rare earth metals, however, sintering may not be necessary.
  • the calcined, precursor shaped abrasive particle 102 or 310 are not completely densified and thus lack the desired hardness to be used as shaped abrasive particle 102 or 310.
  • Sintering takes place by heating the calcined, precursor shaped abrasive particle 102 or 310 to a temperature of from 1000° C to 1650° C.
  • the length of time for which the calcined, precursor shaped abrasive particle 102 or 310 can be exposed to the sintering temperature to achieve this level of conversion depends upon various factors, but from five seconds to 48 hours is possible.
  • the duration of the sintering step ranges from one minute to 90 minutes.
  • the shaped abrasive particle 102 or 310 can have a Vickers hardness of 10 GPa (gigaPascals), 16 GPa, 18 GPa, 20 GPa, or greater.
  • Additional operations can be used to modify the described process, such as, for example, rapidly heating the material from the calcining temperature to the sintering temperature, and centrifuging the precursor dispersion to remove sludge and/or waste.
  • the process can be modified by combining two or more of the process steps if desired.
  • each of the plurality of shaped abrasive particles 102 can have a specified z-direction rotational orientation about a z-axis passing through individual shaped abrasive particles 102 and through reinforcing component 108 and adhesive 106 at a 90 degree angle to component 108.
  • Shaped abrasive particles 102 are orientated with a surface feature, such as a substantially planar surface of particle 102, rotated into a specified angular position about the z-axis.
  • the specified z-direction rotational orientation occurs more frequently than would occur by a random z-directional rotational orientation of the surface feature due to electrostatic coating or drop coating of shaped abrasive particles 102 or 310 when forming shaped abrasive particle transfer assembly 100.
  • the cut rate, finish, or both of a resulting coated abrasive article to which shaped abrasive particle transfer assembly 100 is applied can be varied from those manufactured using an electrostatic coating method.
  • At least 50, 51, 55, 60, 65, 70, 75, 80, 85, 90, 95, or 99 percent of shaped abrasive particles 102 can have a specified z-direction rotational orientation which does not occur randomly and which can be substantially the same for all of the aligned particles.
  • about 50 percent of shaped abrasive particles 102 can be aligned in a first direction and about 50 percent of shaped abrasive particles 102 can be aligned in a second direction.
  • the first direction is substantially orthogonal to the second direction.
  • precise z-direction rotational orientations fo shaped abrasive particles 102 are dicussed, some embodiments of assembly 100 may include randomly oriented shaped abrasive particles.
  • FIG. 4 is a schematic figure showing article maker 400 and FIG. 5 is a perspective view of production tool of article maker 400. Referring now to FIG. 4, and FIG.
  • abrasive article maker 400 includes shaped abrasive particles 102 (although in alternative embodiments, shaped abrasive particles 310 can be used) removably disposed within cavities 520 of production tool 500 having first web path 499guiding production tool 500 through abrasive article maker 400 such that it wraps a portion of an outer circumference of shaped abrasive particle transfer roll 422.
  • Apparatus 400 can include, for example, idler roller 416 and adhesive delivery system 402. These components unwind reinforcing component 108, deliver adhesive 106 via adhesive delivery system 402 to an adhesive coat applicator and apply adhesive to first major surface 412 of reinforcing component 108.
  • Adhesive delivery system 402 can be a simple pan or reservoir containing adhesive 106 or a pumping system with a storage tank and delivery plumbing to translate adhesive 106 to the needed location.
  • An adhesive applicator can be, for example, a coater, a roll coater, a spray system, a die coater, or a rod coater.
  • a pre-coated coated reinforcing component 108 can be positioned by idler roll 416 for application of shaped abrasive particles 102 to the first major surface.
  • production tool 500 comprises a plurality of cavities 520 having a complimentary shape to shaped abrasive particle 102 to be contained therein.
  • Shaped abrasive particle feeder 418 supplies at least some shaped abrasive particles 102 to production tool 500.
  • Shaped abrasive particle feeder 418 can supply an excess of shaped abrasive particles 102 such that there are more shaped abrasive particles 102 present per unit length of production tool in the machine direction than cavities 520 present. Supplying an excess of shaped abrasive particles 102 helps to ensure that a desired number of cavities 520 within production tool 500 are eventually filled with shaped abrasive particle 102.
  • Shaped abrasive particle feeder 418 can be the same width as the production tool 500 and can supply shaped abrasive particles 102 across the entire width of production tool 500.
  • Shaped abrasive particle feeder 418 can be, for example, a vibratory feeder, a hopper, a chute, a silo, a drop coater, or a screw feeder.
  • filling assist member 420 can be provided after shaped abrasive particle feeder 418 to move shaped abrasive particles 102 around on the surface of production tool 500 and to help orientate or slide shaped abrasive particles 102 into the cavities 520.
  • Filling assist member 420 can be, for example, a doctor blade, a felt wiper, a brush having a plurality of bristles, a vibration system, a blower or air knife, a vacuum box, or combinations thereof.
  • Filling assist member 420 moves, translates, sucks, or agitates shaped abrasive particles 102 on dispensing surface 512 (top or upper surface of production tool 500 in FIG.
  • filling assist member 420 can be oscillated laterally in the cross machine direction or otherwise have a relative motion such as circular or oval to the surface of production tool 500 using a suitable drive to assist in completely filling each cavity 520 in production tool 500 with a shaped abrasive particle 102.
  • the bristles may cover a section of dispensing surface 512 from 2-60 inches (5.0-153 cm) in length in the machine direction across all or most all of the width of dispensing surface 512, and lightly rest on or just above dispensing surface 512, and be of a moderate flexibility.
  • Vacuum box if used as filling assist member 420, can be used in conjunction with production tool 500 having cavities 520 extending completely through production tool 500.
  • Vacuum box is located near shaped abrasive particle feeder 418 and may be located before or after shaped abrasive particle feeder 418, or encompass any portion of a web span between a pair of idler rolls 416 in the shaped abrasive particle filling and excess removal section of the apparatus.
  • production tool 500 can be supported or pushed on by a shoe or a plate to assist in keeping it planar in this section of the apparatus instead or in addition to vacuum box 425. It is possible to include one or more assist members 420 to remove excess shaped abrasive particles 102, in some embodiments it may be possible to include only one assist member 420.
  • Shaped abrasive particle transfer roll 422 is provided and production tool 500 can wrap at least a portion of the roll's circumference. In some embodiments, production tool 500 wraps between 30 to 180 degrees, or between 90 to 180 degrees of the outer
  • the speed of the dispensing surface 512 and the speed of adhesive coated reinforcing component 108 are speed matched to each other within ⁇ 10 percent, ⁇ 5 percent, or ⁇ 1 percent, for example.
  • One method includes a pressure assist method where each cavity 520 in production tool 500 has two open ends or the back surface or the entire production tool 500 is suitably porous and shaped abrasive particle transfer roll 422 has a plurality of apertures and an internal pressurized source of air. With pressure assist, production tool 500 does not need to be inverted but it still may be inverted.
  • Shaped abrasive particle transfer roll 422 can also have movable internal dividers such that the pressurized air can be supplied to a specific arc segment or circumference of the roll to blow shaped abrasive particles 102 out of the cavities and onto adhesive coated reinforcing component 108 at a specific location.
  • shaped abrasive particle transfer roll 422 may also be provided with an internal source of vacuum without a corresponding pressurized region or in combination with the pressurized region typically prior to the pressurized region as shaped abrasive particle transfer roll 422 rotates.
  • the vacuum source or region can have movable dividers to direct it to a specific region or arc segment of shaped abrasive particle transfer roll 422.
  • the vacuum can suck shaped abrasive particles 102 firmly into cavities 520 as the production tool 500 wraps shaped abrasive particle transfer roll 422 before subjecting shaped abrasive particles 102 to the pressurized region of shaped abrasive particle transfer roll 422.
  • This vacuum region be used, for example, with shaped abrasive particle removal member to remove excess shaped abrasive particles 102 from dispensing surface 512 or may be used to simply ensure shaped abrasive particles 102 do not leave cavities 520 before reaching a specific position along the outer circumference of the shaped abrasive particle transfer roll 422.
  • the gap between production tool 500 and adhesive coated reinforcing component 108 can be very small. This can particularly be the case when shaped abrasive particles 102 have a largest dimension (e.g., largest diameter, length, or width) that is less than about 22.8 mm. It can be important to control the size of the gap between production tool 500 and adhesive coated reinforcing component 108 to increase the probability that the pattern of shaped abrasive particles 102 in production tool 500 is reliably replicated on adhesive coated reinforcing component 108. If the gap is too large, shaped abrasive particles 102 have more opportunity to rotate or otherwise deviate from their intended path towards adhesive coated reinforcing component 108. According
  • component 108 can be in a range of from about 0.0001 pm to about 1270 pm, about 0.01 pm to about 254 pm, less than, equal to, or greater than about 0.0001 pm, 0.001, 0.01, 0.05, 0.1, 0.5, 1, 5,
  • the intended pattern of shaped abrasive particles 102 can be more reliably replicated on adhesive coated reinforcing component 108, ultimately forming shaped abrasive particle transfer assembly 100, than by directly depositing shaped abrasive particles 102 on a backing having a make coat precursor coated thereon. This can be because adhesive coated reinforcing component 108 can be much thinner than a backing having a make coat precursor coated thereon. This can make it easier to handle adhesive coated reinforcing component 108 and to bring it close to production tool 500, without contact therebetween.
  • the surface of adhesive coated reinforcing component 108 can also be more regular or planar than a backing having a make coat precursor coated thereon as the make coat precursor may be substantially non-planar or include irregularities that can result in contact between the make coat precursor and production tool. This can require mitigation strategies such as increasing the gap between production tool 500 and the make coat precursor, which in turn can increase the probability that the pattern of shaped abrasive particles 102 on the make coat precursor may not be fully replicated.
  • adhesive 106 of assembly 100 can be an adhesive that is capable of contacting production tool 500 without transferring a substantial amount of adhesive 106 from adhesive coated reinforcing component 108 to production tool 500. For example, in some embodiments no adhesive is transferred from adhesive coated reinforcing component 108 to production tool 500.
  • the amount of the total adhesive of component 108 can be in a range of from about 0.01 wt% to about 10 wt% of adhesive 106, about 0.1 wt% to about 5 wt%, less then, equal to, or greater than about 0.01, 0.05, 0.1, 0.15, 0.25, 0.5, 1,
  • Shaped abrasive particle transfer assembly 100 is formed after shaped abrasive particles 102 are deposited on adhesive coated reinforcing component 108. Shaped abrasive particle transfer assembly 100 can be perforated. Perforation can occur by puncturing holes in assembly 100. Perforation can also occur by stretching assembly 100 in a web or cross-web direction. Perforation can occur before shaped abrasive particles 102 are deposited on reinforcing component 108.
  • Perforation can even occur before reinforcing component 108 is put into make 400. Although in some embodiments, it may be possible to perforate reinforcing component 108 after shaped abrasive particles 102 are deposited thereon. After separating from shaped abrasive particle transfer roll 422, production tool 500 travels along first web path 499back towards the shaped abrasive particle filling and excess removal section of the apparatus with the assistance of idler rolls 416 as necessary. An optional production tool cleaner can be provided to remove stuck shaped abrasive particles 102 still residing in cavities 520 as well as to remove adhesive 106 transferred to dispensing surface 512.
  • Choice of the production tool cleaner can depend on the configuration of the production tool and could be either alone or in combination, an additional air blast, solvent or water spray, solvent or water bath, an ultrasonic hom, or an idler roll the production tool wraps to use push assist to force shaped abrasive particles 102 out of the cavities 520. Thereafter endless production tool 500 or belt advances to a shaped abrasive particle filling and excess removal section to be filled with new shaped abrasive particles 102.
  • maker 400 is shown as including production tool 500 as a belt, it is possible in some alternative embodiments for maker 400 to include production tool 500 on abrasive particle transfer roll 422.
  • abrasive particle transfer roll 422 may include a plurality of cavities 520 to which shaped abrasive particles 102 are directly fed. Shaped abrasive particles 102 can be selectively held in place with a vacuum, which can be disengaged to release shaped abrasive particles 102 on coated reinforcement component 108.
  • Maker 400 can also include components such as one or more magnets that can be used to rotate or position shaped abrasive particles 102 that are responsive to a magnetic field.
  • Various idler rolls 416 can be used to guide the shaped abrasive particle transfer assembly 100 having a predetermined, reproducible, non-random pattern of shaped abrasive particles 102 on the first major surface that were applied by shaped abrasive particle transfer roll 422 and held onto the first major surface by the make coat resin along second web path 432 towards a backing component (shown as backing 602 in FIG. 6) having a make resin coated thereon.
  • the backing can include at least one material chosen from a polymeric film, a metal foil, a woven fabric, a knitted fabric, paper, vulcanized fiber, a staple fiber, a continuous fiber, a nonwoven, a foam, a screen, and a laminate.
  • the make coat can include a resinous adhesive.
  • the resinous adhesive can include one or more resins chosen from a phenolic resin, an epoxy resin, a urea-formaldehyde resin, an acrylate resin, an aminoplast resin, a melamine resin, an acrylated epoxy resin, a urethane resin, and mixtures thereof.
  • adhesive 106 can be the same material or mixture of materials as the make coat.
  • the second major surface of shaped abrasive particle transfer assembly 100 is laminated to the backing by beign brought into direct contact with the make coat of the backing. If second major surface has a release liner attached thereto, it can be removed prior to contact.
  • the resinous adhesive material of make coat at least partially immerses shaped abrasive particle transfer assembly 100 such that assembly is ultimately integral to the make coat.
  • Shaped abrasive particle transfer assembly 100 can be immersed in the make coat to such a degree that that a portion of the make coat is distributed over a portion of the first major surface, second major surface, or both of shaped abrasive particle transfer assembly 100.
  • the make coat can alternatively be manually distributed about shaped abrasive particle transfer assembly 100.
  • the make coat can flow between and through first and second major surfaces of shaped abrasive particle transfer assembly 100 through spaces in reinforcing component 108, perforations 109 in adhesive 106, or both.
  • the make coat can be driven through assembly 100 by way of a capillary or wicking action. Attaching assembly 100 and the make coat resin forms coated abrasive article precursor.
  • Coated abrasive article precursor can be driven by idle rollers 416 into an oven for curing the make coat resin.
  • coated abrasive article precursor can be hand delivered into the oven.
  • an optional second shaped abrasive particle coater can be provided to place additional abrasive particles, such as crushed abrasive particles or fillers, onto the make coat.
  • the make coat can be heated to a temperature in a range of from about 20 °C to about 220 °C, about 100 °C to about 150 °C, less than, equal to, or greater than about 20 °C, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, or about 220 °C.
  • reinforcing component 108 can be thermally degraded by this heating step.
  • the crushed abrasive particles can, for example, have an average diameter ranging from about 10 pm to about 2000 pm, about 20 pm to about 1300 pm, about 50 pm to about 1000 pm, less than, equal to, or greater than about 10 pm, 20, 30, 40, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550, 1650, 1700, 1750, 1800, 1850, 1900, 1950, or 2000 pm.
  • the crushed abrasive particles can have an abrasives industry-specified nominal grade.
  • Such abrasives industry-accepted grading standards include those known as the American National Standards Institute, Inc. (ANSI) standards, Federation of European Producers of Abrasive Products (FEPA) standards, and Japanese Industrial Standard (HS) standards.
  • Exemplary ANSI grade designations include: ANSI 12 (1842 pm), ANSI 16 (1320 pm), ANSI 20 (905 pm), ANSI 24 (728 pm), ANSI 36 (530 pm), ANSI 40 (420 pm), ANSI 50 (351 pm), ANSI 60 (264 pm), ANSI 80 (195 pm), ANSI 100 (141 pm), ANSI 120 (116 pm), ANSI 150 (93 pm), ANSI 180 (78 pm), ANSI 220 (66 pm), ANSI 240 (53 pm), ANSI 280 (44 pm), ANSI 320 (46 pm), ANSI 360 (30 pm), ANSI 400 (24 pm), and ANSI 600 (16 pm).
  • Exemplary FEPA grade designations include P12 (1746 pm), P16 (1320 pm), P20 (984 pm), P24 (728 pm), P30 (630 pm), P36 (530 pm), P40 (420 pm), P50 (326 pm), P60 (264 pm), P80 (195 pm), P100 (156 pm), P120 (127 pm), P120 (127 pm), P150 (97 pm), P180 (78 pm), P220 (66 pm), P240 (60 pm), P280 (53 pm), P320 (46 pm), P360 (41 pm), P400 (36 pm), P500 (30 pm), P600 (26 pm), and P800 (22 pm).
  • An approximate average particles size of reach grade is listed in parenthesis following each grade designation.
  • shaped abrasive particles 102 and crushed abrasive particles can independently be in a range of from about 5 wt% to about 96 wt% of the blend, about 15 wt% to about 50 wt%, less than, equal to, or greater than about 5 wt%, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, or about 96 wt%.
  • useful fdlers include metal carbonates (such as calcium carbonate, calcium magnesium carbonate, sodium carbonate, magnesium carbonate), silica (such as quartz, glass beads, glass bubbles and glass fibers), silicates (such as talc, clays, montmorillonite, feldspar, mica, calcium silicate, calcium metasilicate, sodium aluminosilicate, sodium silicate), metal sulfates (such as calcium sulfate, barium sulfate, sodium sulfate, aluminum sodium sulfate, aluminum sulfate), gypsum, vermiculite, sugar, wood flour, a hydrated aluminum compound, carbon black, metal oxides (such as calcium oxide, aluminum oxide, tin oxide, titanium dioxide), metal sulfites (such as calcium sulfite), thermoplastic particles (such as polycarbonate, polyetherimide, polyester, polyethylene, poly(vinylchloride), polysulfone, polystyrene, acrylonitrile-
  • halide salts include sodium chloride, potassium cryolite, sodium cryolite, ammonium cryolite, potassium tetrafluoroborate, sodium tetrafhioroborate, silicon fluorides, potassium chloride, magnesium chloride.
  • metal fillers include, tin, lead, bismuth, cobalt, antimony, cadmium, iron and titanium.
  • Other miscellaneous fillers include sulfur, organic sulfur compounds, graphite, lithium stearate and metallic sulfides.
  • individual shaped abrasive particles 102 or individual crushed abrasive particles can be at least partially coated with an amorphous, ceramic, or organic coating.
  • suitable components of the coatings include, a silane, glass, iron oxide, aluminum oxide, or combinations thereof. Coatings such as these can aid in processability and bonding of the particles to a resin of a binder.
  • the second abrasive particle coater can be a drop coater, spray coater, or an electrostatic coater as known to those of skill in the art.
  • the coated abrasive article precursor can enter into an optional festoon along second web path 432 prior to further processing such as the addition of a size coat, curing of the size coat, and other processing steps known to those of skill in the art of making coated abrasive articles.
  • FIG. 6 is a sectional view of coated abrasive article 600, which is produced according the herein described methods.
  • Coated abrasive article 600 includes backing 602 defining a surface along an x-y direction.
  • Backing 602 has make coat 604, applied over a first surface of backing 602.
  • Attached or partially embedded in make coat 604 are a plurality of shaped abrasive particles 102 and shaped abrasive particle transfer assembly 100.
  • An optional second layer of binder hereinafter referred to as size coat 606, is dispersed over shaped abrasive particles 102.
  • Make coat 604 secures shaped abrasive particles 102 to, assembly 100, or both to backing 602, and size coat 606 can help to reinforce shaped abrasive particles 102.
  • Make coat 604 size coat 606, or both can include the same resinous adhesive.
  • coated abrasive article 600 is a belt, or a portion thereof, adapted for linear movement.
  • coated abrasive article 600 can be a wheel, or a portion thereof, that is adapted for rotational movement.
  • suitable wheels include a depressed-center grinding wheel or a cut-off wheel.
  • a method of using coated abrasive article 600 includes contacting shaped abrasive particles 102 with a workpiece or substrate.
  • the workpiece or substrate can include many different materials such as steel, steel alloy, aluminum, plastic, wood, or a combination thereof.
  • one of abrasive article 600 and the workpiece is moved relative to one another and a portion of the workpiece is removed.
  • Embodiment 1 provides a shaped abrasive particle transfer assembly, the assembly comprising:
  • a substrate comprising an adhesive
  • Embodiment 2 provides the shaped abrasive particle transfer assembly of Embodiment 1, wherein the substrate has a thickness in a range of from about 25.4 pm to about 2540 pm.
  • Embodiment 3 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1 or 2, wherein the substrate has a thickness in a range of from about 76.2 pm to about 762 pm.
  • Embodiment 4 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-3, wherein the substrate comprises a substantially planar profde.
  • Embodiment 5 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-4, wherein the adhesive comprises a pressure-sensitive adhesive, a resinous adhesive, a tackifier, or a mixture thereof.
  • Embodiment 6 provides the shaped abrasive particle transfer assembly of Embodiment 5, wherein the pressure -sensitive adhesive comprises an acrylic pressure-sensitive adhesive, a rubber pressure-sensitive adhesive, a silicone pressure-sensitive adhesive, a styrene block copolymer pressure-sensitive adhesive, a polyvinyl ether-based adhesive, or a mixture thereof.
  • the pressure -sensitive adhesive comprises an acrylic pressure-sensitive adhesive, a rubber pressure-sensitive adhesive, a silicone pressure-sensitive adhesive, a styrene block copolymer pressure-sensitive adhesive, a polyvinyl ether-based adhesive, or a mixture thereof.
  • Embodiment 7 provides the shaped abrasive particle transfer assembly of Embodiment 6, wherein the acrylic pressure -sensitive adhesive comprises a poly (methacrylate).
  • Embodiment 8 provides the shaped abrasive particle transfer assembly of Embodiment 6, wherein the rubber pressure-sensitive adhesive comprises a natural rubber, a synthetic rubber, or a mixture thereof.
  • Embodiment 9 provides the shaped abrasive particle transfer assembly of any one of Embodiments 5-7, wherein resinous adhesive comprises one or more resins chosen from a phenolic resin, an epoxy resin, a urea-formaldehyde resin, an aminoplast resin, a melamine resin, an acrylated epoxy resin, a urethane resin, and mixtures thereof.
  • resinous adhesive comprises one or more resins chosen from a phenolic resin, an epoxy resin, a urea-formaldehyde resin, an aminoplast resin, a melamine resin, an acrylated epoxy resin, a urethane resin, and mixtures thereof.
  • Embodiment 10 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-9, wherein the substrate is an adhesive fdm.
  • Embodiment 11 provides the shaped abrasive particle transfer assembly of Embodiment 10, wherein the adhesive fdm comprises one or more perforations extending between opposed first and second major surfaces of the adhesive film.
  • Embodiment 12 provides the shaped abrasive particle transfer assembly of any one of Embodiments 10 or 11 wherein a portion of each of the shaped abrasive particles is at least partially embedded in the adhesive film.
  • Embodiment 13 provides the shaped abrasive particle transfer assembly of any one of Embodiments 10-12, further comprising a release liner attached to the adhesive film.
  • Embodiment 14 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-13, wherein the substrate comprises a reinforcing component having the adhesive disposed thereon.
  • Embodiment 15 provides the shaped abrasive particle transfer assembly of Embodiment
  • the reinforcing component comprises a perforated polymeric film, a perforated metal foil, a woven fabric, a knitted fabric, perforated paper, a vulcanized fiber, a nonwoven, a foam, a perforated screen, a perforated laminate, a fibrous web, or a combination thereof.
  • Embodiment 16 provides the shaped abrasive particle transfer assembly of Embodiment
  • the fibrous web comprises a plurality of fibers forming a non-woven web, a spun- bound non-woven web, a needle-entangled non-woven web, a braided web, a knit web, a woven web, a blown microfiber, or a combination thereof.
  • Embodiment 17 provides the shaped abrasive particle transfer assembly of any one of Embodiments 15 or 16, wherein the fibrous web comprises a yam comprising a plurality of the fibers.
  • Embodiment 18 provides the shaped abrasive particle transfer assembly of any one of Embodiments 15-17, wherein the adhesive is disposed on individual fibers of the reinforcing component.
  • Embodiment 19 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-18, wherein at least one of the shaped abrasive particles of the plurality of shaped abrasive particles is tetrahedral and comprises four faces joined by six edges terminating at four tips, each one of the four faces contacting three of the four faces.
  • Embodiment 20 provides the shaped abrasive particle transfer assembly of Embodiment 19, wherein at least one of the four faces is substantially planar.
  • Embodiment 21 provides the shaped abrasive particle transfer assembly of any one of Embodiments 19 or 20, wherein at least one of the four faces is concave.
  • Embodiment 22 provides the shaped abrasive particle transfer assembly of Embodiment 19, wherein all of the four faces are concave.
  • Embodiment 23 provides the shaped abrasive particle transfer assembly of any one of Embodiments 19 or 20, wherein at least one of the four faces is convex.
  • Embodiment 24 provides the shaped abrasive particle transfer assembly of Embodiment 19, wherein all of the four faces are convex.
  • Embodiment 25 provides the shaped abrasive particle transfer assembly of any one of Embodiments 19-24, wherein at least one of the tetrahedral abrasive particles has equally-sized edges.
  • Embodiment 26 provides the shaped abrasive particle transfer assembly of any one of Embodiments 19-24, wherein at least one of the tetrahedral abrasive particles has different-sized edges.
  • Embodiment 27 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-26, wherein at least one of the shaped abrasive particles of the plurality of shaped abrasive particles comprises a first side and a second side separated by a thickness t, the first side comprises a first face having a triangular perimeter and the second side comprises a second face having a triangular perimeter, wherein the thickness t is equal to or smaller than the length of the shortest side-related dimension of the particle.
  • Embodiment 28 provides the shaped abrasive particle transfer assembly of Embodiment
  • Embodiment 29 provides the shaped abrasive particle transfer assembly of Embodiment
  • Embodiment 30 provides the shaped abrasive particle transfer assembly of any one of Embodiments 28 or 29, wherein a draft angle a of the sloping sidewall is in a range of from about 95 degrees and about 130 degrees.
  • Embodiment 31 provides the shaped abrasive particle transfer assembly of any one of Embodiments 28-30, wherein the first face and the second face are substantially parallel to each other.
  • Embodiment 32 provides the shaped abrasive particle transfer assembly of any one of Embodiments 28-31, wherein the first face and the second face are substantially non-parallel to each other.
  • Embodiment 33 provides the shaped abrasive particle transfer assembly of any one of Embodiments 28-32, wherein at least one of the first and the second face are substantially planar.
  • Embodiment 34 provides the shaped abrasive particle transfer assembly of any one of Embodiments 28-33, wherein at least one of the first and the second face is a non-planar face.
  • Embodiment 35 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-34, wherein at least one of the shaped abrasive particles comprises at least one shape feature comprising: an opening, a concave surface, a convex surface, a groove, a ridge, a fractured surface, a low roundness factor, or a perimeter comprising one or more comer points having a sharp tip.
  • Embodiment 36 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-35, wherein the predetermined pattern comprises a plurality of circles.
  • Embodiment 37 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-36, wherein the predetermined pattern comprises a plurality of substantially parallel lines.
  • Embodiment 38 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-37, wherein a z-direction rotational angle about a line perpendicular to a major surface of the substrate and passing through individual shaped abrasive particles of the plurality of shaped abrasive particles is substantially the same for at least a portion of the plurality of shaped abrasive particles.
  • Embodiment 39 provides the shaped abrasive particle transfer assembly of Embodiment 38, wherein the portion of the shaped abrasive particles having substantially the same z-direction rotational angle are in a range of from about 25 wt% to about 100 wt% of the plurality of shaped abrasive particles.
  • Embodiment 40 provides the shaped abrasive particle transfer assembly of any one of Embodiments 38 or 39, wherein the portion of the shaped abrasive particles having substantially the same z-direction rotational angle are in a range of from about 50 wt% to about 80 wt% of the plurality of shaped abrasive particles.
  • Embodiment 41 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-40, wherein at least some of the plurality of shaped abrasive particles comprise a ceramic material, a polymeric material, or a mixture thereof.
  • Embodiment 42 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-41, wherein at least some of the plurality of shaped abrasive particles comprise alpha alumina, sol-gel derived alpha alumina, or a mixture thereof.
  • Embodiment 43 provides the shaped abrasive particle transfer assembly of any one of Embodiments 1-42, wherein at least some of the plurality of shaped abrasive particles comprise an aluminosilicate, an alumina, a silica, a silicon nitride, a carbon, a glass, a metal, an alumina- phosphorous pentoxide, an alumina-boria-silica, a zirconia, a zirconia-alumina, a zirconia-silica, a fused aluminum oxide, a heat-treated aluminum oxide, a ceramic aluminum oxide, a sintered aluminum oxide, a silicon carbide material, titanium diboride, boron carbide, tungsten carbide, titanium carbide, diamond, cubic boron nitride, garnet, fused alumina-zirconia, cerium oxide, zirconium oxide, titanium oxide, or a combination thereof.
  • Embodiment 44 provides a method of making the shaped abrasive particle transfer assembly of any one of Embodiments 1-43 the method comprising:
  • Embodiment 45 provides the method of Embodiment 44, wherein the plurality of shaped abrasive particles are retained in individual cavities of a production tool before contacting the substrate with the plurality of shaped abrasive particles.
  • Embodiment 46 provides the method of Embodiment 45, wherein the individual shaped abrasive particles are retained in the individual cavities via a vacuum, via gravity, an electrostatic interaction, or engagement with a retaining member.
  • Embodiment 47 provides the method of Embodiment 46, wherein the individual shaped abrasive particles are released from the production tool by releasing the vacuum, inverting the production tool, changing the electrostatic interaction, disengaging the retaining member, or a combination thereof.
  • Embodiment 48 provides the method of any one of Embodiments 44 or 45, wherein the cavities together have a pattern that substantially conforms to the predetermined pattern of the individual shaped abrasive particles.
  • Embodiment 49 provides the method of any one of Embodiments 45-48, wherein a gap between the substrate and the retained shaped abrasive particles is in a range of from about 0.01 pm to about 1270 pm.
  • Embodiment 50 provides the method of any one of Embodiments 45-49, wherein a gap between the substrate and the retained shaped abrasive particles is in a range of from about 0.01 pm to about 254 pm.
  • Embodiment 51 provides the method of any one of Embodiments 44-50, further comprising applying a release liner to the substrate.
  • Embodiment 52 provides the method of Embodiment 51, wherein the release liner comprises a polyethylene, a polypropylene, a polyurethane, or a mixture thereof.
  • Embodiment 53 provides the method of any one of Embodiments 44-52, further comprising perforating the substrate.
  • Embodiment 54 provides the method of any one of Embodiment 44-53, further comprising drying the substrate.
  • Embodiment 55 provides the method of any one of Embodiments 44-54, further comprising stretching the shaped abrasive particle transfer assembly.
  • Embodiment 56 provides a coated abrasive article comprising
  • Embodiment 57 provides the coated abrasive article of Embodiment 56, wherein the backing is a flexible backing.
  • Embodiment 58 provides the coated abrasive article of any one of Embodiments 56 or 57, wherein the backing comprises at least one material chosen from a polymeric film, a metal foil, a woven fabric, a knitted fabric, paper, vulcanized fiber, a staple fiber, a continuous fiber, a nonwoven, a foam, a screen, and a laminate.
  • Embodiment 59 provides the coated abrasive article of any one of Embodiments 56-58, wherein the make coat comprises a resinous adhesive.
  • Embodiment 60 provides the coated abrasive article of Embodiment 59, wherein the resinous adhesive comprises one or more resins chosen from a phenolic resin, an epoxy resin, a urea-formaldehyde resin, an acrylate resin, an aminoplast resin, a melamine resin, an acrylated epoxy resin, a urethane resin, and mixtures thereof.
  • the resinous adhesive comprises one or more resins chosen from a phenolic resin, an epoxy resin, a urea-formaldehyde resin, an acrylate resin, an aminoplast resin, a melamine resin, an acrylated epoxy resin, a urethane resin, and mixtures thereof.
  • Embodiment 61 provides the coated abrasive article of any one of Embodiments 56-60, wherein the adhesive of the shaped abrasive particle transfer assembly and the resinous adhesive comprise the same material or mixture of materials.
  • Embodiment 62 provides the coated abrasive article of any one of Embodiments 56-61, wherein the abrasive articles further comprises a plurality of crushed abrasive particles adhered to the make coat.
  • Embodiment 63 provides the coated abrasive article of Embodiment 62, wherein the crushed abrasive particles range from about 5 wt% to about 96 wt% of the abrasive layer.
  • Embodiment 64 provides the coated abrasive article of any one of Embodiments 62 or 63, wherein the crushed abrasive particles range from about 15 wt% to about 50 wt% of the abrasive layer.
  • Embodiment 65 provides the coated abrasive article of any one of Embodiments 56-64, wherein the shaped abrasive particles range from about 5 wt% to about 96 wt% of the abrasive layer.
  • Embodiment 66 provides the coated abrasive article of any one of Embodiments 56-65, wherein the shaped abrasive particles range from about 15 wt% to about 50 wt% of the abrasive layer.
  • Embodiment 67 provides the coated abrasive article of any one of Embodiments 56-66, wherein the abrasive article is a grinding wheel or a portion thereof.
  • Embodiment 68 provides the coated abrasive article of Embodiment 67, wherein the grinding wheel is a depressed-center grinding wheel or a portion thereof.
  • Embodiment 69 provides the coated abrasive article of any one of Embodiments 56-68, wherein the abrasive article is a cut-off wheel or a portion thereof.
  • Embodiment 70 provides the coated abrasive article of any one of Embodiments 56-69, wherein the abrasive article is a belt or a portion thereof.
  • Embodiment 71 provides a method of making the coated abrasive article of any one of Embodiments 56-70, the method comprising:
  • Embodiment 72 provides the method of Embodiment 71, wherein the shaped abrasive particle transfer assembly is at least partially immersed in the make coat.
  • Embodiment 73 provides the method of any one of Embodiments 71 or 72, wherein the make coat is distributed over a portion of the first and second major surface of the shaped abrasive particle transfer assembly.
  • Embodiment 74 provides the method of any one of Embodiments 71-73, wherein the make coat flows through perforations of the shaped abrasive particle transfer assembly, spaces between fibers of the shaped abrasive particle transfer assembly, or both.
  • Embodiment 75 provides the method of any one of Embodiments 71-74, further comprising heating the make coat to a temperature in a range of from about 20 °C to about 220 °C.
  • Embodiment 76 provides the method of any one of Embodiments 71-75, further comprising heating the make coat to a temperature in a range of from about 100 °C to about 150 °C.
  • Embodiment 77 provides the method of any one of Embodiments 71-76, further comprising thermally degrading the reinforcing component.
  • Embodiment 78 provides the method of any one of Embodiments 71-77, wherein a belt driven by a first roller comprises the shaped abrasive particle transfer assembly; a belt driven by a second roller comprises the backing; and
  • the shaped abrasive particle transfer assembly and the backing are driven to contact each other by the first roller and the second roller.
  • Embodiment 79 provides a method of using the coated abrasive article of any one of Embodiments 56-70 or made according to the method of any one of Embodiments 71-78, the method comprising:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Divers modes de réalisation de la présente invention concernent un ensemble de transfert de particules abrasives mises en forme. L'ensemble de transfert de particules abrasives mises en forme comprend un substrat comprenant un adhésif et une pluralité de particules abrasives mises en forme adhérant au substrat et formant un motif prédéterminé sur celui-ci.
EP19835777.4A 2018-12-18 2019-12-17 Ensemble de transfert de particules abrasives mises en forme Pending EP3898086A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862781072P 2018-12-18 2018-12-18
PCT/IB2019/060934 WO2020128842A1 (fr) 2018-12-18 2019-12-17 Ensemble de transfert de particules abrasives mises en forme

Publications (1)

Publication Number Publication Date
EP3898086A1 true EP3898086A1 (fr) 2021-10-27

Family

ID=69159839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19835777.4A Pending EP3898086A1 (fr) 2018-12-18 2019-12-17 Ensemble de transfert de particules abrasives mises en forme

Country Status (4)

Country Link
US (1) US12011807B2 (fr)
EP (1) EP3898086A1 (fr)
CN (1) CN113195161A (fr)
WO (1) WO2020128842A1 (fr)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102074138B1 (ko) 2011-12-30 2020-02-07 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 형상화 연마입자 및 이의 형성방법
EP2802436B1 (fr) 2012-01-10 2019-09-25 Saint-Gobain Ceramics & Plastics, Inc. Particules abrasives dotées de formes complexes
KR101813466B1 (ko) 2012-05-23 2017-12-29 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 형상화 연마입자들 및 이의 형성방법
EP2906392B1 (fr) 2012-10-15 2025-04-16 Saint-Gobain Abrasives, Inc. Particules abrasives présentant des formes particulières et procédés permettant de former lesdites particules
WO2014161001A1 (fr) 2013-03-29 2014-10-02 Saint-Gobain Abrasives, Inc. Particules abrasives ayant des formes particulières et procédés de formation de telles particules
CN111978921A (zh) 2013-09-30 2020-11-24 圣戈本陶瓷及塑料股份有限公司 成形磨粒及其形成方法
KR102081045B1 (ko) 2013-12-31 2020-02-26 생-고뱅 어브레이시브즈, 인코포레이티드 형상화 연마 입자들을 포함하는 연마 물품
US9771507B2 (en) 2014-01-31 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
AU2015247826A1 (en) 2014-04-14 2016-11-10 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US9914864B2 (en) 2014-12-23 2018-03-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
TWI634200B (zh) 2015-03-31 2018-09-01 聖高拜磨料有限公司 固定磨料物品及其形成方法
US10196551B2 (en) 2015-03-31 2019-02-05 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
EP3307483B1 (fr) 2015-06-11 2020-06-17 Saint-Gobain Ceramics&Plastics, Inc. Article abrasif comprenant des particules abrasives profilées
KR102313436B1 (ko) 2016-05-10 2021-10-19 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 연마 입자들 및 그 형성 방법
EP4071224A3 (fr) 2016-05-10 2023-01-04 Saint-Gobain Ceramics and Plastics, Inc. Méthodes de formation de particules abrasives
EP4349896A3 (fr) 2016-09-29 2024-06-12 Saint-Gobain Abrasives, Inc. Articles abrasifs fixes et procédés pour les former
US10563105B2 (en) 2017-01-31 2020-02-18 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
CN113195162A (zh) 2018-12-18 2021-07-30 3M创新有限公司 图案化磨料基底和方法
US12263558B2 (en) 2018-12-18 2025-04-01 3M Innovative Properties Company Camouflage for abrasive articles
WO2020128720A2 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Réception améliorée de particules lors de la création d'articles abrasifs
WO2020128716A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Dispositif de fabrication d'article abrasif à vitesse d'outillage différentielle
EP3898093B1 (fr) 2018-12-18 2024-08-21 3M Innovative Properties Company Réceptacle d'épissure d'outillage pour la production d'articles abrasifs
WO2020128719A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Article abrasif revêtu ayant des particules d'espacement, procédé de fabrication et appareil associé
MX2021009576A (es) 2019-02-11 2021-09-08 3M Innovative Properties Company Articulo abrasivo.
US11926019B2 (en) 2019-12-27 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
WO2021133876A1 (fr) 2019-12-27 2021-07-01 Saint-Gobain Ceramics & Plastics, Inc. Articles abrasifs et leurs procédés de formation
EP4081370A4 (fr) 2019-12-27 2024-04-24 Saint-Gobain Ceramics & Plastics Inc. Articles abrasifs et leurs procédés de formation
US12528158B2 (en) 2020-07-30 2026-01-20 3M Innovative Properties Company Abrasive article and method of making the same
MX2024007593A (es) 2021-12-30 2024-08-20 Saint Gobain Abrasives Inc Artículos abrasivos y métodos de formación de los mismos.
CN118591436A (zh) 2021-12-30 2024-09-03 圣戈班磨料磨具有限公司 磨料制品及其形成方法
EP4457054A4 (fr) 2021-12-30 2026-01-14 Saint Gobain Abrasives Inc Articles abrasifs et leurs procédés de formation
CN115338784B (zh) * 2022-08-03 2024-08-06 莆田市屹立砂轮磨具有限公司 一种耐磨损砂轮磨具及其制备工艺

Family Cites Families (119)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910444A (en) 1931-02-13 1933-05-23 Carborundum Co Process of making abrasive materials
US2141658A (en) 1932-12-14 1938-12-27 Carborundum Co Method and apparatus for making granular coated webs
US3058819A (en) 1959-01-14 1962-10-16 Carborundum Co Anti-weld additives for coated abrasive bonds
US3041156A (en) 1959-07-22 1962-06-26 Norton Co Phenolic resin bonded grinding wheels
US3869834A (en) 1967-10-05 1975-03-11 Avco Corp Coated abrasive articles having a surface deposit of fluorocarbon particles
US3616580A (en) 1969-02-10 1971-11-02 Minnesota Mining & Mfg Method of abrading titanium and titanium alloys
SE338933B (fr) 1970-01-20 1971-09-20 Fab Ab Eka
US3676092A (en) 1970-12-21 1972-07-11 Carborundum Co Oversized abrasive coated products
US3784365A (en) 1971-04-06 1974-01-08 Red Hill Grinding Wheel Corp Organic-bonded abrasive containing octachloronaphthalene filler
US3868232A (en) 1971-07-19 1975-02-25 Norton Co Resin-bonded abrasive tools with molybdenum metal filler and molybdenum disulfide lubricant
US3833346A (en) 1971-07-26 1974-09-03 J Wirth Abrading aid containing paraffin and an inhibitor
US4215516A (en) 1979-04-18 1980-08-05 Sheldahl, Inc. Unidirectional tape
US4314827A (en) 1979-06-29 1982-02-09 Minnesota Mining And Manufacturing Company Non-fused aluminum oxide-based abrasive mineral
US4475926A (en) 1982-02-25 1984-10-09 Norton Company Active filler for grinding wheels
US4623364A (en) 1984-03-23 1986-11-18 Norton Company Abrasive material and method for preparing the same
CA1266568A (fr) 1984-05-09 1990-03-13 Minnesota Mining And Manufacturing Company Abrasif colle a substituts mineraux selectifs
CA1266569A (fr) 1984-05-09 1990-03-13 Minnesota Mining And Manufacturing Company Abrasif colle a substituts mineraux selectifs
CA1254238A (fr) 1985-04-30 1989-05-16 Alvin P. Gerk Procede sol-gel pour l'obtention de grains d'abrasif et de produits abrasifs ceramiques durables a base d'alumine
US4652275A (en) 1985-08-07 1987-03-24 Minnesota Mining And Manufacturing Company Erodable agglomerates and abrasive products containing the same
US4770671A (en) 1985-12-30 1988-09-13 Minnesota Mining And Manufacturing Company Abrasive grits formed of ceramic containing oxides of aluminum and yttrium, method of making and using the same and products made therewith
US4751138A (en) 1986-08-11 1988-06-14 Minnesota Mining And Manufacturing Company Coated abrasive having radiation curable binder
US4799939A (en) 1987-02-26 1989-01-24 Minnesota Mining And Manufacturing Company Erodable agglomerates and abrasive products containing the same
US4881951A (en) 1987-05-27 1989-11-21 Minnesota Mining And Manufacturing Co. Abrasive grits formed of ceramic containing oxides of aluminum and rare earth metal, method of making and products made therewith
CH675250A5 (fr) 1988-06-17 1990-09-14 Lonza Ag
US5011508A (en) 1988-10-14 1991-04-30 Minnesota Mining And Manufacturing Company Shelling-resistant abrasive grain, a method of making the same, and abrasive products
YU32490A (en) 1989-03-13 1991-10-31 Lonza Ag Hydrophobic layered grinding particles
US4997461A (en) 1989-09-11 1991-03-05 Norton Company Nitrified bonded sol gel sintered aluminous abrasive bodies
US5085671A (en) 1990-05-02 1992-02-04 Minnesota Mining And Manufacturing Company Method of coating alumina particles with refractory material, abrasive particles made by the method and abrasive products containing the same
US5078753A (en) 1990-10-09 1992-01-07 Minnesota Mining And Manufacturing Company Coated abrasive containing erodable agglomerates
US5152917B1 (en) 1991-02-06 1998-01-13 Minnesota Mining & Mfg Structured abrasive article
US5378251A (en) 1991-02-06 1995-01-03 Minnesota Mining And Manufacturing Company Abrasive articles and methods of making and using same
US5316812A (en) 1991-12-20 1994-05-31 Minnesota Mining And Manufacturing Company Coated abrasive backing
DE69228487T2 (de) 1991-12-20 1999-09-02 Minnesota Mining And Mfg. Co. Ueberzogenes schleifband mit endlosem, verbandfreiem traeger und herstellungsverfahren
US5269821A (en) 1992-02-20 1993-12-14 Minnesota Mining And Manufacturing Company Coatable mixtures including erodable filler agglomerates, methods of preparing same, abrasive articles incorporating cured versions of same, and methods of making said articles
US5203884A (en) 1992-06-04 1993-04-20 Minnesota Mining And Manufacturing Company Abrasive article having vanadium oxide incorporated therein
RU95105160A (ru) 1992-07-23 1997-01-10 Миннесота Майнинг энд Мануфакчуринг Компани (US) Способ приготовления абразивной частицы, абразивные изделия и изделия с абразивным покрытием
US5201916A (en) 1992-07-23 1993-04-13 Minnesota Mining And Manufacturing Company Shaped abrasive particles and method of making same
US5366523A (en) 1992-07-23 1994-11-22 Minnesota Mining And Manufacturing Company Abrasive article containing shaped abrasive particles
US5213591A (en) 1992-07-28 1993-05-25 Ahmet Celikkaya Abrasive grain, method of making same and abrasive products
US5435816A (en) 1993-01-14 1995-07-25 Minnesota Mining And Manufacturing Company Method of making an abrasive article
CA2115889A1 (fr) 1993-03-18 1994-09-19 David E. Broberg Article abrasif revetu comportant des particules diluantes et des particules abrasives formees
US5436063A (en) 1993-04-15 1995-07-25 Minnesota Mining And Manufacturing Company Coated abrasive article incorporating an energy cured hot melt make coat
US5441549A (en) 1993-04-19 1995-08-15 Minnesota Mining And Manufacturing Company Abrasive articles comprising a grinding aid dispersed in a polymeric blend binder
DE69419764T2 (de) 1993-09-13 1999-12-23 Minnesota Mining And Mfg. Co., St. Paul Schleifartikel, verfahren zur herstellung desselben, verfahren zur verwendung desselben zum endbearbeiten, und herstellungswerkzeug
US5453106A (en) 1993-10-27 1995-09-26 Roberts; Ellis E. Oriented particles in hard surfaces
MX9603329A (es) * 1994-02-22 1997-03-29 Minnesota Mining & Mfg Abrasivos recubiertos y metodos para fabricar los mismos.
US5498268A (en) 1994-03-16 1996-03-12 Minnesota Mining And Manufacturing Company Abrasive articles and method of making abrasive articles
WO1996010471A1 (fr) 1994-09-30 1996-04-11 Minnesota Mining And Manufacturing Company Article abrasif revetu, procede de preparation de cet article, et son procede d'utilisation
US5975987A (en) 1995-10-05 1999-11-02 3M Innovative Properties Company Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article
JPH11513620A (ja) 1995-10-20 1999-11-24 ミネソタ・マイニング・アンド・マニュファクチャリング・カンパニー 無機金属オルトリン酸塩を含有する研磨物品
CN1092095C (zh) 1996-05-08 2002-10-09 明尼苏达矿业和制造公司 包括抗填充成分的磨料制品
US5766277A (en) 1996-09-20 1998-06-16 Minnesota Mining And Manufacturing Company Coated abrasive article and method of making same
US5946991A (en) 1997-09-03 1999-09-07 3M Innovative Properties Company Method for knurling a workpiece
US6228133B1 (en) 1998-05-01 2001-05-08 3M Innovative Properties Company Abrasive articles having abrasive layer bond system derived from solid, dry-coated binder precursor particles having a fusible, radiation curable component
US6077601A (en) 1998-05-01 2000-06-20 3M Innovative Properties Company Coated abrasive article
US20020077037A1 (en) 1999-05-03 2002-06-20 Tietz James V. Fixed abrasive articles
US6293980B2 (en) 1999-12-20 2001-09-25 Norton Company Production of layered engineered abrasive surfaces
EP1207015A3 (fr) 2000-11-17 2003-07-30 Keltech Engineering, Inc. Article abrasif comportant des ílots surélevés, procédé d'utilisation et dispositif de polissage
US6833014B2 (en) * 2002-07-26 2004-12-21 3M Innovative Properties Company Abrasive product, method of making and using the same, and apparatus for making the same
US7044989B2 (en) 2002-07-26 2006-05-16 3M Innovative Properties Company Abrasive product, method of making and using the same, and apparatus for making the same
US20040098923A1 (en) * 2002-11-25 2004-05-27 3M Innovative Properties Company Nonwoven abrasive articles and methods for making and using the same
TW200626299A (en) * 2005-01-24 2006-08-01 Ching-Tien Lin Improved method for manufacturing magnetic abrasive for use in magnetic grinding
EP2295496A1 (fr) 2005-06-29 2011-03-16 Saint-Gobain Abrasives, Inc. Résine haute performance pour produits abrasifs
US8080072B2 (en) 2007-03-05 2011-12-20 3M Innovative Properties Company Abrasive article with supersize coating, and methods
US8123828B2 (en) 2007-12-27 2012-02-28 3M Innovative Properties Company Method of making abrasive shards, shaped abrasive particles with an opening, or dish-shaped abrasive particles
KR101563381B1 (ko) 2007-12-27 2015-10-26 쓰리엠 이노베이티브 프로퍼티즈 컴파니 소정 형상의 파쇄된 연마 입자, 이를 사용한 연마 용품, 및 그 제조 방법
US8142531B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with a sloping sidewall
US8142532B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with an opening
US8142891B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Dish-shaped abrasive particles with a recessed surface
BR112012013346B1 (pt) 2009-12-02 2020-06-30 3M Innovative Properties Company partículas abrasivas com formato duplamente afunilado
EP2507016B1 (fr) 2009-12-02 2020-09-23 3M Innovative Properties Company Procédé de fabrication d'un article abrasif revêtu comprenant des particules abrasives mises en forme et produit résultant
KR101849797B1 (ko) 2010-04-27 2018-04-17 쓰리엠 이노베이티브 프로퍼티즈 컴파니 세라믹 형상화 연마 입자, 이의 제조 방법 및 이를 함유하는 연마 용품
JP5774105B2 (ja) 2010-08-04 2015-09-02 スリーエム イノベイティブ プロパティズ カンパニー 交差プレート成形研磨粒子
WO2012112305A2 (fr) 2011-02-16 2012-08-23 3M Innovative Properties Company Article abrasif revêtu ayant des particules abrasives céramiques façonnées alignées en rotation et procédé de fabrication
WO2012112322A2 (fr) 2011-02-16 2012-08-23 3M Innovative Properties Company Appareil et procédé de revêtement de particules abrasives électrostatiques
EP2906392B1 (fr) * 2012-10-15 2025-04-16 Saint-Gobain Abrasives, Inc. Particules abrasives présentant des formes particulières et procédés permettant de former lesdites particules
CN105358292B (zh) 2013-02-26 2019-01-15 Kwh米尔卡有限公司 提供磨料产品的方法及其磨料产品
WO2014161001A1 (fr) 2013-03-29 2014-10-02 Saint-Gobain Abrasives, Inc. Particules abrasives ayant des formes particulières et procédés de formation de telles particules
DE212014000110U1 (de) 2013-04-24 2015-12-08 3M Innovative Properties Company Schleifmittel auf Unterlage in Bandform
US9969057B2 (en) 2013-06-28 2018-05-15 Robert Bosch Gmbh Abrasive means
TW201502263A (zh) 2013-06-28 2015-01-16 Saint Gobain Ceramics 包含成形研磨粒子之研磨物品
WO2015100018A1 (fr) 2013-12-23 2015-07-02 3M Innovative Properties Company Systèmes de positionnement de particules abrasives et outils de production associés
JP6545173B2 (ja) * 2013-12-23 2019-07-17 スリーエム イノベイティブ プロパティズ カンパニー コーティングされた研磨物品を製造する方法
EP3086903B1 (fr) 2013-12-23 2019-09-11 3M Innovative Properties Company Appareil de fabrication d'articles abrasifs revêtus
AU2015247826A1 (en) 2014-04-14 2016-11-10 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
WO2016028683A1 (fr) 2014-08-21 2016-02-25 3M Innovative Properties Company Article abrasif revêtu avec des structures multiplexées de particules abrasives et procédé de fabrication
CN106687253B (zh) 2014-09-15 2020-01-17 3M创新有限公司 制备磨料制品以及可由此制备的粘结磨料轮的方法
JP6718868B2 (ja) 2014-10-21 2020-07-08 スリーエム イノベイティブ プロパティズ カンパニー 研磨プリフォーム、研磨物品を製造する方法、及び結合研磨物品
JP2017536254A (ja) 2014-12-04 2017-12-07 スリーエム イノベイティブ プロパティズ カンパニー 角度を成した成形研磨粒子を備える研磨ベルト
JP6735286B2 (ja) 2015-03-30 2020-08-05 スリーエム イノベイティブ プロパティズ カンパニー 被覆研磨物品及びその製造方法
KR20160125208A (ko) 2015-04-21 2016-10-31 삼성전자주식회사 핀 액티브 영역들을 갖는 반도체 소자 및 그 제조 방법
PL3310532T3 (pl) 2015-06-19 2022-01-17 3M Innovative Properties Company Systemy i sposoby wytwarzania wyrobów ściernych
JP6865180B2 (ja) 2015-06-19 2021-04-28 スリーエム イノベイティブ プロパティズ カンパニー ある範囲内のランダムな回転配向を有する研磨粒子付き研磨物品
WO2017007703A1 (fr) 2015-07-08 2017-01-12 3M Innovative Properties Company Systèmes et procédés de fabrication d'articles abrasifs
CN107848094B (zh) 2015-07-08 2020-09-11 3M创新有限公司 用于制造磨料制品的系统和方法
WO2017083255A1 (fr) 2015-11-13 2017-05-18 3M Innovative Properties Company Article abrasif lié et son procédé de réalisation
CN108348962B (zh) 2015-11-13 2019-07-09 3M创新有限公司 形状分选粉碎磨料颗粒的方法
EP4349896A3 (fr) 2016-09-29 2024-06-12 Saint-Gobain Abrasives, Inc. Articles abrasifs fixes et procédés pour les former
CN109843509A (zh) * 2016-10-25 2019-06-04 3M创新有限公司 结构化磨料制品及其制备方法
EP3558591A4 (fr) 2016-12-21 2020-07-29 3M Innovative Properties Company Systèmes, procédés et outils pour distribuer différentes pluralités de particules abrasives pour réaliser des articles abrasifs
WO2018118596A2 (fr) 2016-12-22 2018-06-28 3M Innovative Properties Company Article abrasif lié à une résine ayant de multiples couleurs
CN110087832B (zh) 2016-12-22 2022-02-11 3M创新有限公司 磨料制品及其制备方法
CN110198810A (zh) 2017-01-19 2019-09-03 3M创新有限公司 可磁化磨料颗粒的磁性辅助转移及其相关的方法、装置和系统
WO2018207145A1 (fr) 2017-05-12 2018-11-15 3M Innovative Properties Company Particules abrasives tétraédriques dans des articles abrasifs
EP3790942A1 (fr) 2018-05-10 2021-03-17 3M Innovative Properties Company Articles abrasifs comprenant des particules abrasives de forme molle
WO2020128716A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Dispositif de fabrication d'article abrasif à vitesse d'outillage différentielle
EP3898082A1 (fr) 2018-12-18 2021-10-27 3M Innovative Properties Company Articles abrasifs comprenant des particules abrasives de forme variable
WO2020128719A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Article abrasif revêtu ayant des particules d'espacement, procédé de fabrication et appareil associé
CN113423537A (zh) 2018-12-18 2021-09-21 3M创新有限公司 磨料制品产生中改善的颗粒接收
CN113242779A (zh) 2018-12-18 2021-08-10 3M创新有限公司 沉积磨料颗粒的方法
WO2020128857A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Motif linéaire en quinconce pour articles abrasifs
WO2020128717A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Substrat abrasif à motifs et procédé
EP3898876A1 (fr) 2018-12-18 2021-10-27 3M Innovative Properties Company Remblai pour fixer une orientation pour une structure abrasive
US12263558B2 (en) 2018-12-18 2025-04-01 3M Innovative Properties Company Camouflage for abrasive articles
US20220055182A1 (en) 2018-12-18 2022-02-24 3M Innovative Properties Company Multiple orientation cavities in tooling for abrasives
WO2020128844A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Macro-motif pour articles abrasifs
CN113195162A (zh) 2018-12-18 2021-07-30 3M创新有限公司 图案化磨料基底和方法
EP3898093B1 (fr) 2018-12-18 2024-08-21 3M Innovative Properties Company Réceptacle d'épissure d'outillage pour la production d'articles abrasifs
WO2020128720A2 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Réception améliorée de particules lors de la création d'articles abrasifs

Also Published As

Publication number Publication date
WO2020128842A1 (fr) 2020-06-25
US20220055187A1 (en) 2022-02-24
US12011807B2 (en) 2024-06-18
CN113195161A (zh) 2021-07-30

Similar Documents

Publication Publication Date Title
US12011807B2 (en) Shaped abrasive particle transfer assembly
US20220055182A1 (en) Multiple orientation cavities in tooling for abrasives
US20260054353A1 (en) Method of Forming Patterned Abrasive Substrate
EP3898094B1 (fr) Dispositif de fabrication d'article abrasif à vitesse d'outillage différentielle
US20250114912A1 (en) Coated abrasive article having spacer particles, making method and apparatus therefor
WO2020128844A1 (fr) Macro-motif pour articles abrasifs
KR102469608B1 (ko) 미세입자 코팅된 연마 그레인을 갖는 연마 물품
WO2020128717A1 (fr) Substrat abrasif à motifs et procédé
US20220048162A1 (en) Backfill to secure orientation for abrasive structure
US20220064508A1 (en) Serrated shaped abrasive particles and method for manufacturing thereof
WO2020128857A1 (fr) Motif linéaire en quinconce pour articles abrasifs
US12263558B2 (en) Camouflage for abrasive articles
WO2020128833A1 (fr) Procédé pour le dépôt de particules abrasives
WO2016028683A1 (fr) Article abrasif revêtu avec des structures multiplexées de particules abrasives et procédé de fabrication
US20100319269A1 (en) Shaped abrasive particles with low roundness factor
US20230332029A1 (en) Abrasive particles
EP4323149A1 (fr) Structures linéaires de particules abrasives alignées

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210617

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20250128

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20260217

P01 Opt-out of the competence of the unified patent court (upc) registered

Free format text: CASE NUMBER: UPC_APP_0011162_3898086/2026

Effective date: 20260327